NEW YORK STATE MUSEUM 2^ 



8 Where conditions permit, the probabiHties of a general and 

 possibly serious infestation may be considerably reduced by plant- 

 ing small areas of early corn, particularly near previously infested 

 fields or adjacent to sources of infestation, such as scattered corn 

 stalks, for the purpose of attracting the moths. In case a serious 

 infestation results, the borers in these small plantings may be 

 destroyed by feeding the corn, or in some other manner. The main 

 crop, if planted a little later, would largely escape the pest, if one 

 may judge from conditions the last three seasons in the infested 

 areas in both New York State and Ontario, Canada. 



CODLING MOTH 

 Carpocapsa pomonella Linn. 



Experimental work with this insect has been continued in the 

 orchard of Mr G. W. Mead of Barker, the applications and classifi- 

 cation of the fruit being supervised by Mr L, F, Strickland of the 

 Department of Farms and Markets. A general description of the 

 orchard and the location of the plots has been given in the Report 

 for 191 7, pages i8 and 19, and need not be repeated. 



The first application, the regular calyx spray, was made June 2, 

 1919 and consisted of lime sulphur, i to 40, and lead arsenate, 5 

 pounds to 100 gallons. The amount used was 225 gallons, the 

 pressure 225 pounds, and an excellent distribution was secured. 

 Plots 2 and 3 were sprayed again June 3d using the same formula, 

 and 150 gallons of spray were applied at a pressure of 225 pounds. 

 Plot 3 was sprayed for the third time, July 31st, about 70 gallons 

 of spray being applied. 



The first treatment in 1920 was given June 2d, the second June 

 24th and, owing to the very light set of fruit, there was no third 

 application to plot 3. The formula was the same as in 1919. 



The data for the individual plots have been summarized and are 

 tabulated with that of earlier years. 



